Results 71 to 80 of about 65,030 (220)

Body size of male Atlantic salmon (Salmo salar L.) at introduction of a 5‐week LD12:12 winter signal influences their decision to mature early or smoltify

Journal of Fish Biology, EarlyView.
Abstract Sexual maturation of male Atlantic salmon post‐smolts (‘jacking’) is undesired in aquaculture and seems to occur due to the intensification in modern facilities. Maturation depends on internal and external factors (temperature, photoperiod, feed availability, energy levels, body size, genetic background) that act on the brain‐pituitary‐gonad ...
Enrique Pino‐Martinez, Kristine F. Staveland, Mitchell S. Fleming, Pablo Balseiro, Cindy Pedrosa, Sigurd O. Handeland   +5 more
wiley   +1 more source

Partial Merosin Deficiency and Precocious Puberty

, 2015
The congenital muscular dystrophies (CMD) are autosomal-recessive disorders. Classical congenital muscular dystrophy is grouped as merosin-positive and merosin-negative (MN-CMD). Precocious puberty in girls has been defined by Marshal and Tanner in 1969.
Yuca, Sevil Ari, Akyürek, Nesibe, Eklioğlu, Beray Selver, Yuca, Sevil Arı, Atabek, Mehmet Emre   +4 more
core   +1 more source

Clinical spectrum of precocious puberty and its normal variants in children: insights from a seven-year review in a tertiary hospital, Calabar, Nigeria

Ibom Medical Journal
Context: Precocious puberty, clinically defined as the development of secondary sexual characteristics before 8 years of age in girls and 9 years in boys, represents a clinical spectrum that encompasses both pathological and non-pathological variants of
Eyong ME, Nsa EI, Uzomba CI, Eyong EM, Brown E, Ikobah JM, Etuk IS   +6 more
doaj   +1 more source

Association between MKRN3 and LIN28B polymorphisms and precocious puberty

BMC Genetics, 2018
Background The present study aimed to investigate the association between MKRN3 and LIN28B gene polymorphisms and precocious puberty in Korean boys and girls.
Bo Ram Yi, Hyun Jeong Kim, Hye Sook Park, Yoon Jeong Cho, Ju Young Kim, Jeong Yee, Jee Eun Chung, Joo Hee Kim, Kyung Eun Lee, Hye Sun Gwak   +9 more
doaj   +1 more source

Narcolepsy and rapid eye movement sleep

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Since the first description of narcolepsy at the end of the 19th Century, great progress has been made. The disease is nowadays distinguished as narcolepsy type 1 and type 2. In the 1960s, the discovery of rapid eye movement sleep at sleep onset led to improved understanding of core sleep‐related disease symptoms of the disease (excessive ...
Francesco Biscarini, Lucie Barateau, Fabio Pizza, Giuseppe Plazzi, Yves Dauvilliers   +4 more
wiley   +1 more source

Superb Microvascular Imaging for Detecting Ovarian Vascularity in Precocious Puberty, Premature Thelarche, and Pubertal Girls

Objective: We aimed to evaluate ovarian vascularity with superb microvascular imaging (SMI) and to compare it with other conventional Doppler imaging methods in girls with premature thelarche, precocious puberty, and those at puberty. Methods: A total
Ayşe Gül Alımlı, Eda Mengen Uçaktürk, Nazlı Gülsüm Akyel, Mesut Sivri, Havva Akmaz Ünlü, Seyit Ahmet Uçaktürk   +5 more
core   +1 more source

The MexMAGIC population reveals the genetic architecture of traits exhibiting clinal variation in Mexican native maize

New Phytologist, Volume 252, Issue 3, Page 1296-1313, November 2026.
The MexMAGIC population mixes native maize varieties from across Mexico to study functional genetic diversity. Summary Defining the genetic basis of local adaptation is a key goal of evolutionary biology and crop improvement. Theory predicts that when selective pressures follow differences in the environment, a cline will be established.
Sergio Perez‐Limón, Ana Laura Alonso‐Nieves, M. Rosario Ramírez‐Flores, G. Carolina Cintora‐Martínez, M. Nancy Salazar‐Vidal, Jorge Vladimir Torres‐Rodriguez, Jessica Carcaño‐Macías, Melanie G. Perryman, Oliver H. S. Paulson, Jagdeep S. Sidhu, Peng Yu, Victor Llaca, Kevin A. Fengler, Forrest Li, Daniel E. Runcie, Jeffrey Ross‐Ibarra, C. Stewart Gillmor, Rubén Rellán‐Álvarez, Ruairidh J. H. Sawers   +18 more
wiley   +1 more source

Progressive Parkinsonism in PPP2R5D‐Related Neurodevelopmental Disorder

Annals of Clinical and Translational Neurology, Volume 13, Issue 10, Page 2161-2165, October 2026.
ABSTRACT PPP2R5D‐related neurodevelopmental disorder (Houge–Janssens syndrome type 1) is a rare autosomal dominant condition characterized by macrocephaly, intellectual disability, and epilepsy. Progressive parkinsonism is an emerging adult phenotype that neurologists should be aware of since timely genetic diagnosis opens the door to disease‐modifying
Katerina Bernardi, Enrique Gonzalez Saez‐Diez, Joshua Rong, Beril Ay, Shabbir Merchant, Kathryn Yang, Darius Ebrahimi‐Fakhari   +6 more
wiley   +1 more source

Cause and consequences of precocious puberty [PDF]

Background. Precocious puberty (PP) means the appearance of secondary sexual characters before the age of eight years in girls and nine years in boys.
Bogonovschi, Livia, Nireekshith, Vishwas
core   +1 more source

Multidisciplinary Management of a Giant Ovarian Sertoli–Leydig Cell Tumor Presenting With Isosexual Precocious Puberty: A Pediatric Case Report

Clinical Case Reports, Volume 14, Issue 10, October 2026.
ABSTRACT Sertoli–Leydig cell tumors (SLCTs) are rare ovarian sex cord‐stromal tumors, particularly uncommon in the pediatric population. They are typically androgen‐secreting, while estrogen‐secreting forms are rare and may lead to diagnostic confusion with granulosa cell tumors.
Sanaa Bouramdane, Kenza Elmkaddem, Nawal Hammas, Meryem Boubbou, Othmane Alaoui, Khalid Khattala, Youssef Bouabdellah, Sarra Benmiloud   +7 more
wiley   +1 more source